Merge commit '4cb38750d49010ae72e718d46605ac9ba5a851b4' into stable/for-linus-3.6

* commit '4cb38750d49010ae72e718d46605ac9ba5a851b4': (6849 commits)
  bcma: fix invalid PMU chip control masks
  [libata] pata_cmd64x: whitespace cleanup
  libata-acpi: fix up for acpi_pm_device_sleep_state API
  sata_dwc_460ex: device tree may specify dma_channel
  ahci, trivial: fixed coding style issues related to braces
  ahci_platform: add hibernation callbacks
  libata-eh.c: local functions should not be exposed globally
  libata-transport.c: local functions should not be exposed globally
  sata_dwc_460ex: support hardreset
  ata: use module_pci_driver
  drivers/ata/pata_pcmcia.c: adjust suspicious bit operation
  pata_imx: Convert to clk_prepare_enable/clk_disable_unprepare
  ahci: Enable SB600 64bit DMA on MSI K9AGM2 (MS-7327) v2
  [libata] Prevent interface errors with Seagate FreeAgent GoFlex
  drivers/acpi/glue: revert accidental license-related 6b66d95895c bits
  libata-acpi: add missing inlines in libata.h
  i2c-omap: Add support for I2C_M_STOP message flag
  i2c: Fall back to emulated SMBus if the operation isn't supported natively
  i2c: Add SCCB support
  i2c-tiny-usb: Add support for the Robofuzz OSIF USB/I2C converter
  ...

1 files changed, 5 insertions, 4 deletions

diff --git a/arch/arm/mach-at91/gpio.c b/arch/arm/mach-at91/gpio.c
index 325837a264c..be42cf0e74b 100644
--- a/arch/arm/mach-at91/gpio.c
+++ b/arch/arm/mach-at91/gpio.c
@@ -26,6 +26,8 @@
 #include <linux/of_irq.h>
 #include <linux/of_gpio.h>
 
+#include <asm/mach/irq.h>
+
 #include <mach/hardware.h>
 #include <mach/at91_pio.h>
 
@@ -585,15 +587,14 @@ static struct irq_chip gpio_irqchip = {
 
 static void gpio_irq_handler(unsigned irq, struct irq_desc *desc)
 {
+	struct irq_chip *chip = irq_desc_get_chip(desc);
 	struct irq_data *idata = irq_desc_get_irq_data(desc);
-	struct irq_chip *chip = irq_data_get_irq_chip(idata);
 	struct at91_gpio_chip *at91_gpio = irq_data_get_irq_chip_data(idata);
 	void __iomem	*pio = at91_gpio->regbase;
 	unsigned long	isr;
 	int		n;
 
-	/* temporarily mask (level sensitive) parent IRQ */
-	chip->irq_ack(idata);
+	chained_irq_enter(chip, desc);
 	for (;;) {
 		/* Reading ISR acks pending (edge triggered) GPIO interrupts.
 		 * When there none are pending, we're finished unless we need
@@ -614,7 +615,7 @@ static void gpio_irq_handler(unsigned irq, struct irq_desc *desc)
 			n = find_next_bit(&isr, BITS_PER_LONG, n + 1);
 		}
 	}
-	chip->irq_unmask(idata);
+	chained_irq_exit(chip, desc);
 	/* now it may re-trigger */
 }